Insole



FIG. 1 is a bottom plan view of an insole showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a cross-sectional view thereof as taken from line 7--7 of FIG. 1. 

The ornamental design for an insole, substantially as shown and described. 